@keyframes _si{to{opacity:1}}

.legacy-content .objective {display:flex;gap:14px;align-items:flex-start;background:linear-gradient(135deg,var(--amber-soft),transparent);border:1px solid rgba(217,149,22,.27);border-radius:14px;padding:18px 20px;margin:18px 0 28px}.legacy-content .objective svg {flex:0 0 auto;color:var(--accent)}.legacy-content .objective b {display:block;color:var(--accent);margin-bottom:4px}.legacy-content .objective span {font-size:14px;line-height:1.7}.legacy-content .gate {background:var(--surface-soft);border:1px solid #594015;border-radius:18px;padding:20px;box-shadow:0 18px 48px rgba(70,45,4,.18)}.legacy-content .gate svg {display:block;width:100%;height:auto}.legacy-content .caption {text-align:center;color:var(--muted);font-size:12px;margin-top:8px}.legacy-content .branch-grid {display:grid;grid-template-columns:1fr 1fr;gap:16px}.legacy-content .branch {background:var(--card);border:1px solid var(--border);border-radius:14px;padding:19px;box-shadow:var(--shadow-card)}.legacy-content .branch h3 {font-size:15px;margin:0 0 9px;color:var(--text)}.legacy-content .chips {display:flex;flex-wrap:wrap;gap:7px}.legacy-content .chip {font:11px ui-monospace,SFMono-Regular,Menlo,monospace;padding:5px 8px;border-radius:6px;background:var(--bg);color:var(--text)}.legacy-content .branch p {font-size:12px;color:var(--sub);line-height:1.7;margin:10px 0 0}.legacy-content .warning {padding:16px 18px;background:#fff7e6;border:1px solid #efd49c;border-radius:12px;color:#5e471f;font-size:13px;line-height:1.75}.legacy-content .warning b {color:#9b670b}.legacy-content .source {background:var(--surface-soft);border:1px solid #4d3816;border-radius:14px;overflow:hidden}.legacy-content .source-head {padding:10px 16px;background:var(--surface-soft);color:var(--muted);font:12px ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .source pre {padding:17px;margin:0;overflow:auto}.legacy-content .source code {color:var(--muted);font:12px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .kw {color:#f4b942}.legacy-content .fn {color:#e8a92f}.legacy-content .str {color:var(--muted)}.legacy-content .cm {color:#968970}.legacy-content .exercise {display:grid;grid-template-columns:auto 1fr;gap:15px;padding:20px;border:1px solid rgba(217,149,22,.3);border-radius:14px;background:linear-gradient(135deg,#fff8e9,var(--card))}.legacy-content .exercise strong {width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:var(--accent);color:#fff}.legacy-content .exercise h3 {margin:0 0 6px;font-size:16px}.legacy-content .exercise p {margin:0;font-size:13px;line-height:1.75;color:var(--sub)}.legacy-content .snapshot {margin-top:13px;padding:13px 16px;border:1px solid var(--border);border-radius:8px;background:var(--bg);font-size:12px;line-height:1.7;color:var(--sub)}.legacy-content .snapshot code {color:var(--text)}.legacy-content .takeaway {margin-top:22px;padding:19px 22px;border-radius:14px;background:var(--surface-soft);color:var(--muted);display:flex;gap:13px;line-height:1.75}.legacy-content .takeaway svg {flex:0 0 auto;color:var(--gold)}.legacy-content .takeaway b {color:var(--gold)}@media(max-width:720px){.legacy-content .branch-grid {grid-template-columns:1fr}.legacy-content .gate {padding:10px}.legacy-content .source-head {overflow-wrap:anywhere}}